This will definitely get done eventually, as I mentioned before, I’m a fan myself (that’s how I thought up the feature in the first place). But it’s not technically trivial, and very few users know about it or used it. By my count just over 1% of forum members have asked about it in this thread. I’m sure there are others that haven’t said anything, but still that’s maybe 2-3% of forum members, and probably a smaller percentage of overall Panorama users (I assume forum members use more Panorama features than non-members).
As for other programs that support it, as far as I know Panorama’s implementation of this feature is unique, though I could be wrong.
If you look at the release notes for the past year there have been hundreds of changes made. Obviously, every item can’t be on the top of the priority list.